Characterization of metal complexes in Kuwait atmospheric residues

Taegon Kim, Adel Al-Mutairi, Abdulazeem M.J. Marafi, Joo Il Park, Seong-Ho Yoon, Isao Mochida

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Four kinds of atmospheric residues (ARs) from Kuwait crudes were characterized using various analytical tools. V- and Ni petroporphyrins present in the four ARs could be analyzed by gas chromatography-atomic emission detection with high-temperature injection. All the ARs exhibited definite peaks for the vanadium and nickel species. Chromatograms of vanadium and nickel consist of a broad peak superimposed with sharp peaks corresponding to the retention times of porphyrin. Demetallation of ARs on the silica-alumina (support only) catalyst alone decreased the intensity of the sharp peaks preferentially over the broad one. ARs exhibited electron spin resonance (ESR) with the species V=O, whose line profiles were different from that of V=O tetraphenylporphyrin in tetrahydrofuran at room temperature. The profiles, however, resemble those of the frozen form (- 150 °C), indicating limited mobility of petroporphyrin in the AR at room temperature. The limited mobility, revealed by ESR, and the favorable effects of hydrogenation conditions for hydrodemetallization suggest the covalent and noncovalent binding of some petroporphyrins to the polymeric component in the as-received forms of ARs. Liberation of petroporphyrin from the gas chromatograph column at around 450 °C may occur and generate monomeric forms that reach the detector.

Original languageEnglish
Pages (from-to)497-503
Number of pages7
JournalFuel Processing Technology
Volume126
DOIs
Publication statusPublished - Jan 1 2014

Fingerprint

Coordination Complexes
Metal complexes
Vanadium
Nickel
Paramagnetic resonance
Aluminum Oxide
Porphyrins
Catalyst supports
Silicon Dioxide
Gas chromatography
Temperature
Hydrogenation
Alumina
Gases
Silica
Detectors
Catalysts

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Characterization of metal complexes in Kuwait atmospheric residues. / Kim, Taegon; Al-Mutairi, Adel; Marafi, Abdulazeem M.J.; Park, Joo Il; Yoon, Seong-Ho; Mochida, Isao.

In: Fuel Processing Technology, Vol. 126, 01.01.2014, p. 497-503.

Research output: Contribution to journalArticle

Kim, Taegon ; Al-Mutairi, Adel ; Marafi, Abdulazeem M.J. ; Park, Joo Il ; Yoon, Seong-Ho ; Mochida, Isao. / Characterization of metal complexes in Kuwait atmospheric residues. In: Fuel Processing Technology. 2014 ; Vol. 126. pp. 497-503.
@article{48c6d930238c49c39984630058cda84c,
title = "Characterization of metal complexes in Kuwait atmospheric residues",
abstract = "Four kinds of atmospheric residues (ARs) from Kuwait crudes were characterized using various analytical tools. V- and Ni petroporphyrins present in the four ARs could be analyzed by gas chromatography-atomic emission detection with high-temperature injection. All the ARs exhibited definite peaks for the vanadium and nickel species. Chromatograms of vanadium and nickel consist of a broad peak superimposed with sharp peaks corresponding to the retention times of porphyrin. Demetallation of ARs on the silica-alumina (support only) catalyst alone decreased the intensity of the sharp peaks preferentially over the broad one. ARs exhibited electron spin resonance (ESR) with the species V=O, whose line profiles were different from that of V=O tetraphenylporphyrin in tetrahydrofuran at room temperature. The profiles, however, resemble those of the frozen form (- 150 °C), indicating limited mobility of petroporphyrin in the AR at room temperature. The limited mobility, revealed by ESR, and the favorable effects of hydrogenation conditions for hydrodemetallization suggest the covalent and noncovalent binding of some petroporphyrins to the polymeric component in the as-received forms of ARs. Liberation of petroporphyrin from the gas chromatograph column at around 450 °C may occur and generate monomeric forms that reach the detector.",
author = "Taegon Kim and Adel Al-Mutairi and Marafi, {Abdulazeem M.J.} and Park, {Joo Il} and Seong-Ho Yoon and Isao Mochida",
year = "2014",
month = "1",
day = "1",
doi = "10.1016/j.fuproc.2014.05.030",
language = "English",
volume = "126",
pages = "497--503",
journal = "Fuel Processing Technology",
issn = "0378-3820",
publisher = "Elsevier",

}

TY - JOUR

T1 - Characterization of metal complexes in Kuwait atmospheric residues

AU - Kim, Taegon

AU - Al-Mutairi, Adel

AU - Marafi, Abdulazeem M.J.

AU - Park, Joo Il

AU - Yoon, Seong-Ho

AU - Mochida, Isao

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Four kinds of atmospheric residues (ARs) from Kuwait crudes were characterized using various analytical tools. V- and Ni petroporphyrins present in the four ARs could be analyzed by gas chromatography-atomic emission detection with high-temperature injection. All the ARs exhibited definite peaks for the vanadium and nickel species. Chromatograms of vanadium and nickel consist of a broad peak superimposed with sharp peaks corresponding to the retention times of porphyrin. Demetallation of ARs on the silica-alumina (support only) catalyst alone decreased the intensity of the sharp peaks preferentially over the broad one. ARs exhibited electron spin resonance (ESR) with the species V=O, whose line profiles were different from that of V=O tetraphenylporphyrin in tetrahydrofuran at room temperature. The profiles, however, resemble those of the frozen form (- 150 °C), indicating limited mobility of petroporphyrin in the AR at room temperature. The limited mobility, revealed by ESR, and the favorable effects of hydrogenation conditions for hydrodemetallization suggest the covalent and noncovalent binding of some petroporphyrins to the polymeric component in the as-received forms of ARs. Liberation of petroporphyrin from the gas chromatograph column at around 450 °C may occur and generate monomeric forms that reach the detector.

AB - Four kinds of atmospheric residues (ARs) from Kuwait crudes were characterized using various analytical tools. V- and Ni petroporphyrins present in the four ARs could be analyzed by gas chromatography-atomic emission detection with high-temperature injection. All the ARs exhibited definite peaks for the vanadium and nickel species. Chromatograms of vanadium and nickel consist of a broad peak superimposed with sharp peaks corresponding to the retention times of porphyrin. Demetallation of ARs on the silica-alumina (support only) catalyst alone decreased the intensity of the sharp peaks preferentially over the broad one. ARs exhibited electron spin resonance (ESR) with the species V=O, whose line profiles were different from that of V=O tetraphenylporphyrin in tetrahydrofuran at room temperature. The profiles, however, resemble those of the frozen form (- 150 °C), indicating limited mobility of petroporphyrin in the AR at room temperature. The limited mobility, revealed by ESR, and the favorable effects of hydrogenation conditions for hydrodemetallization suggest the covalent and noncovalent binding of some petroporphyrins to the polymeric component in the as-received forms of ARs. Liberation of petroporphyrin from the gas chromatograph column at around 450 °C may occur and generate monomeric forms that reach the detector.

UR - http://www.scopus.com/inward/record.url?scp=84903183115&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84903183115&partnerID=8YFLogxK

U2 - 10.1016/j.fuproc.2014.05.030

DO - 10.1016/j.fuproc.2014.05.030

M3 - Article

VL - 126

SP - 497

EP - 503

JO - Fuel Processing Technology

JF - Fuel Processing Technology

SN - 0378-3820

ER -